.classification_box{
    width: 100%;
    height: 100%;
    /*background-color: #7A67EE;*/
    position: relative;
}
.classification_box a,
.classification_box input{
    line-height: 50px;
    font-size: 20px;
    color: #787878;
}
.classification_box a{
    padding-right: 14px;
}
.classification_box input{
    color: #787878;
    border: none;
    width: 20px;
    /* font-size: 30px; */
    /* line-height: 40px; */
    background-color: transparent;
}
.essay_area{
    width: 100%;
    /* text-align: center; */
    height: 2117px;
}
.essay_area p{
    text-indent: 30px;
    padding-top: 20px;
    line-height: 46px;
    font-size: 19px;
}
.essay_area video{
    width: 870px;
    height: 200px;
    border: 1px solid black;
}
.top_title span:last-child{
    width: 100%;
    display: inline-block;
    text-align: center;
    padding-top: 10px;
}
.essay_title{
    padding-top: 20px;
    width: 100%;
    text-align: center;
    display: inline-block;
    font-size: 30px;
}
.top_title{
    width: 100%;
    height: 100px;
    /*background-color: #C7C7C7;*/
    position: relative;
}
.change_essay{
    width: 100%;
    height: 150px;
    /*background: rebeccapurple;*/
    position: absolute;
    bottom: 0px
}
.change_essay a{
    color: #787878;
    /* line-height: 37px; */
    padding-top: 20px;
    display: inline-block;
    font-size: 20px;
}
.main_body_left{
    float: left;
    width: 68%;
    height: 80%;
    /*background-color: aquamarine;*/
    position: relative;
}